>>> from datetime import datetime
>>> datetime.today()
datetime.datetime(2018, 7, 31, 16, 46, 57, 768000)
>>> yyyy=str(datetime.today().year)
>>> mm=str(datetime.today().month) if datetime.today().month >9 else '0'+str(datetime.today().month)
>>> dd=str(datetime.today().day)
>>> cdate=yyyy + '-' + mm + '-' + dd
>>> cdate
'2018-07-31'
>>> hh = str(datetime.today().hour) if datetime.today().hour>9 else '0'+str(datetime.today().hour)
>>> mm = str(datetime.today().minute) if datetime.today().minute>9 else '0'+str(datetime.today().minute)
>>> ss = str(datetime.today().second) if datetime.today().second>9 else '0'+str(datetime.today().second)
>>> ctime=hh + '-' + mm + '-' + ss
>>> ctime
'19-03-29'